Has anyone else's baby had a range of heart rates? For example, 166,160,154,140? Is this normal?
yes its normal my sons started at 174 with my first U/S and before I had him his was 134
Yes, and it's normal, the heart rate can change for numerous reasons, and anywhere from 180-120 and even lower/higher is normal.
Totally normal! Theirs fluctuate just like ours